She said: "There are lots of wonderful options out there. So whether we do it biologically or whether we don't is something we have spoken about but that's not going to happen right now.

"I guess when the time comes when we feel, 'OK, shall we then?' we'll proceed to do what we want to do."

Jo has been a TV nanny since she was 33 and now lives in California with TV location coordinator Darrin Jackson, 46, who she met while filming together.

Jo said: "We got engaged at the beginning of this year. We're making plans but haven't set a date yet. We don't know whether to get married in the UK or the USA or somewhere else. I definitely don't want somewhere cold, that's for sure!"

Supernanny ran for seven series and was shown in almost 50 countries. She then had success with her follow-up shows, Jo Frost Extreme Parental Guidance and Family SOS with Jo Frost. Since then she has written a string of best-selling parenting books.

Prince William is said to have spent hours preparing for the birth of Prince George by watching re-runs of Supernanny!

Jo is back in the UK for the launch of her new daytime talk show, Jo Frost Family Matters, starting next Monday on ITV.

Each show will see her help two families with problems ranging from marital affairs, to serious debt and tearaway teens.

As in her previous shows, she will spend time in her guests' homes to get an understanding of the issues they face.

But then they come back to the studio where Jo delivers her sensible solutions in front of a live audience.

She said: "It's called Family Matters because family matters. We're all family at the end of the day – connected to other members of our family as adults or children.

"It's about creating good relationships with our family and learning how to have healthy relationships."